From Fossilto Green: A Low-Carbon ElectrochemicalPathway for Lignite Depolymerization
化石からグリーンへ：褐炭解重合のための低炭素電気化学経路 (AI 翻訳)
Jia Guo, Xijiang Zong, Mingqiang Gao, Keji Wan, Zhenyong Miao
🤖 gxceed AI 要約
日本語
本研究は、褐炭を温和な電気化学的脱重合によりフミン酸へ高効率変換する手法を提案。アルカリ定電流電解で20分以内に乾燥ベースで57.04%の収率を達成し、残炭の酸素含有量が増加、芳香族性が低下することを示した。弱結合の選択的切断が反応機構の鍵であり、石炭系化学品の電解合成への理論的支援を提供する。
English
This study proposes a mild electrochemical depolymerization strategy to efficiently convert lignite into humic acid, achieving a 57.04% yield within 20 minutes under alkaline constant-current conditions. The mechanism involves selective cleavage of weak bonds, increasing oxygen content and decreasing aromaticity of residual coal, offering theoretical support for electro-synthesis of high-value coal-based chemicals.
Unofficial AI-generated summary based on the public title and abstract. Not an official translation.
📝 gxceed 編集解説 — Why this matters
日本のGX文脈において
日本の石炭産業は縮小傾向にあるが、石炭化学の高度利用技術はエネルギー転換期における移行技術として参考になる。特に、褐炭のクリーン利用は、北海道や九州の炭鉱地域の産業転換に応用可能性がある。
In the global GX context
This work contributes to the global discourse on low-carbon coal utilization, offering a potential pathway for reducing emissions from coal chemical processes. It aligns with transition finance discussions by providing a technological option for decarbonizing existing coal assets.
👥 読者別の含意
🔬研究者:石炭の電気化学的変換メカニズムの詳細な解析は、石炭化学の研究者に有用。
🏢実務担当者:石炭化学プラントの運営企業は、低炭素化プロセスとして検討の余地がある。
🏛政策担当者:石炭地域の産業転換政策を検討する際に、技術オプションとして参照可能。
📄 Abstract（原文）
Abstract The high-value utilization of lignite is pivotal for the clean transformation of the coal industry. However, traditional methods for preparing humic acid struggle to simultaneously achieve high efficiency, environmental friendliness, and economic viability. This study proposes a mild, clean electrochemical depolymerization strategy to efficiently convert Zhaotong lignite slurry into humic acid under alkaline constant-current conditions. Comprehensive multiscale analyses elucidated the structural and chemical evolution of residual coal throughout the electrolysis process. Based on these findings, the reaction mechanism for humic acid generation driven by electrochemical processes was inferred. Results indicate that within 20 min of alkaline constant-current electrolysis, the dry-basis humic acid yield from Zhaotong lignite reached 57.04%. The residual coal’s oxygen content significantly increased from 23.60% to 35.27%. Aliphatic components fragmented into shorter chains, while the relative distribution of oxygen-containing functional groups underwent dynamic changes. The dominance of C–O bonds strengthened and established a central role, whereas the dominance of COO– bonds weakened. The aromaticity of solid residual coal decreased significantly from 48.28% to 24.33%. This efficient conversion stems from the selective cleavage of Cal-O type bridging bonds and aliphatic side chains via electrochemical means. This process promotes the dissolution and oxidation of low-condensation-degree aromatic clusters into water-soluble humic acids, while higher-condensation-degree bicyclic and polycyclic aromatic clusters remain retained in the residual coal. This work systematically reveals the depolymerization mechanism of lignite macromolecules into humic acids via weak bond cleavage under electric field drive, providing theoretical support for the electro-synthesis of high-value coal-based chemicals.
🔗 Provenance — このレコードを発見したソース
- openalex https://doi.org/10.1021/acs.energyfuels.6c02631first seen 2026-08-07 04:59:51
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